pcntl_getpriority

(PHP 5)

pcntl_getpriority — Get the priority of any process

说明

int pcntl_getpriority ([ int $pid=getmypid() [, int $process_identifier=PRIO_PROCESS ]] )

pcntl_getpriority() gets the priority of pid . Because priority levels can differ between system types and kernel versions, please see your system's getpriority(2) man page for specific details.

参数

pid: If not specified, the pid of the current process is used.
process_identifier: One of PRIO_PGRP, PRIO_USER or PRIO_PROCESS.

返回值

pcntl_getpriority() returns the priority of the process or FALSE on error. A lower numerical value causes more favorable scheduling.

Warning

本函数可能返回布尔值 FALSE，但也可能返回一个与 FALSE 等值的非布尔值，例如 0 或者 ""。请参阅布尔类型章节以获取更多信息。应使用 === 运算符来测试本函数的返回值。

参见

pcntl_setpriority() - Change the priority of any process